9mm reload ? [Archive] - Glock Talk

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10head
04-27-2011, 15:46
want to load some 115gr 9mm xtp's with 3n37, vitv manual lists at 1.141 loaded one looks like a mk48 torpedo, cant find any other info, any thoughts would be helpfull

Duck of Death
04-27-2011, 16:13
Use your mag to determine over all length. OAL 1.145 using MG 121IFP for my G34 open gun.

bandmasterjf
04-27-2011, 16:19
Use your mag to determine over all length. OAL 1.145 using MG 121IFP for my G34 open gun.


I found that most factory loads aren't even close to the OAL. I don't go over, but make sure that mine will cycle good. I'm usually in the 1.08-1.12 area. I've never had any pressure or cycling problems.

fredj338
04-27-2011, 16:21
Use your mag to determine over all length. OAL 1.145 using MG 121IFP for my G34 open gun.
The issue will be if they fit the chamber of your pistol. The XTP has a sharp shoulder, often hits the rifling sooner than later. Pull the bbl, drop the round in, it should fall in & out easily.

10head
04-27-2011, 16:22
at 1.145 they just fit mag but i wonder if i have enough grip on bullet,dont know how much shorter i can go before pressure gets to high

fredj338
04-27-2011, 16:26
at 1.145 they just fit mag but i wonder if i have enough grip on bullet,dont know how much shorter i can go before pressure gets to high
I like at least 1/2 caliber in handgun bullets inside the case.

10head
04-27-2011, 16:49
hey fred so if i loaded to 1.110 i should have 180 inside case, i think?. the case is .750 bullet is .540 oal 1.110. 9mm is .356 so 180 is a little over half, right?

Duck of Death
04-27-2011, 16:59
*QUOTE*
I like at least 1/2 caliber in handgun bullets inside the case.

When you're shooting a G34 9mm major (power factor of 165+) you load as long as possible. I'm pushing a MG 121 IFP @ 1450 FPS for a PF of 175. Lots of gas makes the comp work better.

GioaJack
04-27-2011, 17:04
*QUOTE*
I like at least 1/2 caliber in handgun bullets inside the case.

When you're shooting a G34 9mm major (power factor of 165+) you load as long as possible. I'm pushing a MG 121 IFP @ 1450 FPS for a PF of 175. Lots of gas makes the comp work better.


I'm a bit confused, which is not at all unusual for me. How does loading 'longer' create more gas?

The shorter the AOL the less the case capacity, the less the case capacity the higher the pressure. I guess I don't understand how the longer AOL is creating more 'gas'. :dunno:


Jack

fredj338
04-27-2011, 17:36
*QUOTE*
I like at least 1/2 caliber in handgun bullets inside the case.

When you're shooting a G34 9mm major (power factor of 165+) you load as long as possible. I'm pushing a MG 121 IFP @ 1450 FPS for a PF of 175. Lots of gas makes the comp work better.
Well that is fine, my guns, my reloads, my rules. I like enough bullet inside the case to withstand chambering 100% of the tiem, abotu 1/2 caliber min works for me. It's not carved in stone.
FWIW, I learned along time ago, if you need more gun, get a bigger one, don't reload to insane pressures to get there. I can get 175 in any 45acp w/o even getting to out of traget load pressures.:dunno: To each his own though.
Jack I don;t think DOD was linking the two together, jut pointing out if you are playing w/ small thermal nuclear devices, you load long for what ever margin of safety is left.

njl
04-27-2011, 18:56
Loading long for 9mm major is the norm AFAIK. I suspect it's to make more room for powder/gas and/or to help keep the pressure from spiking too high. The reason they do it is to maximize the number of rounds they can get in a mag and probably also because 9mm brass is plentiful/cheap/free while .38super brass is not something you're likely to find piles of left behind at the range. If someone would design a .45acp that has the mag capacity of a 9mm (same length mags), the gamers would shoot it.

fredj338
04-27-2011, 20:05
Loading long for 9mm major is the norm AFAIK. I suspect it's to make more room for powder/gas and/or to help keep the pressure from spiking too high. The reason they do it is to maximize the number of rounds they can get in a mag and probably also because 9mm brass is plentiful/cheap/free while .38super brass is not something you're likely to find piles of left behind at the range. If someone would design a .45acp that has the mag capacity of a 9mm (same length mags), the gamers would shoot it.
There are several high cap 45acp, 13+1, that are easy to run & cheap enough. For IDPA, you only get 18rd max stages anyway, no real need. I have just never liked hot rodding calibers, pistol or rifle. If I need more HP, go big or go home.:supergrin:

njl
04-27-2011, 20:19
There are several high cap 45acp, 13+1, that are easy to run & cheap enough. For IDPA, you only get 18rd max stages anyway, no real need. I have just never liked hot rodding calibers, pistol or rifle. If I need more HP, go big or go home.:supergrin:

Do people bother with 9mm major in IDPA? I think it's all for USPSA...where 13+1 is not high capacity. High capacity is mag capacities somewhere up in the 20s, and stages can be way more than 18 rounds.

fredj338
04-27-2011, 23:36
Do people bother with 9mm major in IDPA? I think it's all for USPSA...where 13+1 is not high capacity. High capacity is mag capacities somewhere up in the 20s, and stages can be way more than 18 rounds.

Yeah I know, I used to shoot IPSC, gamers. Real men shoot real guns.:tongueout: I can see the point but pushign 9mm major is eventually going to bite you in the ass. Glocks are cheap though.:whistling:

Duck of Death
04-28-2011, 08:32
My G34 open gun 28 +1 in a 170 mm mag. More powder = more gas. If Glock made a 38 Super I'd shoot it.

MikeyBones
04-29-2011, 20:47
To the original poster: #7 Hornady manual calls for an OAL of 1.060" because of their shape; they seat deeper than a long round nose so weigh your charges carefully. If you use the powder manufacturers data, a lot of times they quote generic data that covers too broad a spectrum of bullet shapes. I load the 115 gr xtp's at 1.060, and although they seem way too short, they feed and shoot well. Really, it all boils down to what your particular gun likes to eat ammo wise. If you don't seat deep enough your bullet can actually move in of the case from recoil....

Colorado4Wheel
04-29-2011, 20:58
My G34 open gun 28 +1 in a 170 mm mag. More powder = more gas. If Glock made a 38 Super I'd shoot it.

Get a 9X21mm reamer and make your own basically.

Brass cost about the same. Longer length. It's kinda old school.

PhantomF4E
04-29-2011, 21:14
I have loaded thousands of 9 115g MG at 1.142 oal with zero problems in any of my 9's . Works for me and my shooters from an old P08 to a Kahr p9. There is a little more to it than that but that is my standard oal. for just about any rn load.

Duck of Death
04-30-2011, 09:40
*QUOTE*
Get a 9X21mm reamer and make your own basically.

A 9mm Glock mag will only take a OAL of 1.45, a longer case will provide no advantage.

njl
04-30-2011, 16:38
*QUOTE*
Get a 9X21mm reamer and make your own basically.

A 9mm Glock mag will only take a OAL of 1.45, a longer case will provide no advantage.

1.45" in a Glock 9mm mag? That sounds way off.

fredj338
04-30-2011, 19:30
*QUOTE*
Get a 9X21mm reamer and make your own basically.

A 9mm Glock mag will only take a OAL of 1.45, a longer case will provide no advantage.

Hmm, w/ PD 115grFMJ I can get to 1.150" w/ 100% reliability in my G17? I think WWWB goes 1.160"+/-.:dunno:

Boxerglocker
04-30-2011, 20:12
Hmm, w/ PD 115grFMJ I can get to 1.150" w/ 100% reliability in my G17? I think WWWB goes 1.160"+/-.:dunno:

WWB will go right to the limit of 1.169 OAL

DWARREN123
04-30-2011, 20:19
If it fits in the chamber and works in the mags it should be good to go.

Gokyo
04-30-2011, 20:27
1.45" in a Glock 9mm mag? That sounds way off.
THink he meant 1.145

njl
05-01-2011, 06:16
THink he meant 1.145

That's how I initially read it...but even that would be way off. Most factory 115gr ammo I've seen is >1.145".

Duck of Death
05-01-2011, 09:54
Yep, 1.145 (1.45 was a typo) it's as long as I want to go in Glock mags. Keeps my G34 open gun running well.